<!-- <html lang="en">
    <head>
        <title> css的学习 </title>
        <style>
            .eat{
                color: red;               
            }
            .sleep{
                color: green; 
            }
            .game{
                color: blue;
            }
            .play{
                font-size: 80px;
            }
        </style>
    </head>
    <body>
        <p class="eat">吃饭</p>
        <p class="sleep">睡觉</p>
        <p class="play game">玩游戏</p>
    </body>
</html> -->


<html lang="en">
    <head>
        <title> css的学习 </title>
        <style>
            #fe{
                color: red;
            }
            #server{
                color: blue;
            }
        </style>
    </head>
    <body>
        <p id="fe">前端开发</p>
        <p id="server">后端开发</p>
    </body>
</html>
